CN102133536B - Front multi-element catalyst and preparation method thereof - Google Patents
Front multi-element catalyst and preparation method thereof Download PDFInfo
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- CN102133536B CN102133536B CN2011100534486A CN201110053448A CN102133536B CN 102133536 B CN102133536 B CN 102133536B CN 2011100534486 A CN2011100534486 A CN 2011100534486A CN 201110053448 A CN201110053448 A CN 201110053448A CN 102133536 B CN102133536 B CN 102133536B
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- preposition
- catalyst
- multicomponent catalyst
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- oxide
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- 239000003054 catalyst Substances 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 21
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000005245 sintering Methods 0.000 claims abstract description 12
- 241000276489 Merlangius merlangus Species 0.000 claims description 15
- 238000000498 ball milling Methods 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 229910000421 cerium(III) oxide Inorganic materials 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 15
- 239000000446 fuel Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 238000012857 repacking Methods 0.000 description 8
- 239000003502 gasoline Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000003283 Pachira macrocarpa Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 241001083492 Trapa Species 0.000 description 1
- 235000014364 Trapa natans Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 235000009165 saligot Nutrition 0.000 description 1
Abstract
The invention discloses a front multi-element catalyst and a preparation method thereof, and belongs to the field of automobile exhaust purification. The catalyst solves the technical problems of short life and high oil consumption of the conventional ternary catalyst. The front multi-element catalyst is prepared from heavy calcium carbonate, water glass, alumina, iron oxide, Ce2O3 and the balance of water, and is spherical. The catalyst is prepared by adopting a sintering method. The front multi-element catalyst has the advantages of long life (3 to 5 years), energy conservation, emission reduction, no secondary pollution and power increment; and the catalyst is mainly used for treating exhaust of vehicles. The method has simple process, is convenient for operation, and has mild reaction conditions.
Description
Technical field
The invention belongs to the purifying vehicle exhaust field; Be specifically related to preposition multicomponent catalyst and preparation method thereof.
Background technology
Vehicle exhaust is very serious to the pollution of atmosphere, and it is administered is the key subjects of face of mankind.Ternary catalyzing unit is that the most ripe product is widely used on the treating vehicle exhaust, lost efficacy by damages such as phosphorus, sulphur, thereby shortens service life, and fuel consumption is (fuel consumption increase) greatly.Because the ternary catalyzing unit life-span is short, produce wearing and tearing after one section of the engine operation, tail gas must exceed standard, and the improvement of this " " has been become a social concern that needs to be resolved hurrily.Even to this day, people are much to seek a desirable product that " using car " administered.With regard to Guangzhou, the what is called that the present whole city need administer " yellow mark car " just reaches 200,000, and visible, the improvement of " using car " is very urgent.
Summary of the invention
The present invention will solve the technical problem that existing ternary catalyzing unit exists the life-span to lack, fuel consumption is big, be prone to cause secondary pollution; And preposition multicomponent catalyst and preparation method thereof is provided.
Preposition multicomponent catalyst is by weight percentage by 50%～55% powdered whiting, 10%～15% waterglass, 5% aluminium oxide, 20%～25% ferriferous oxide, 0.1%～0.15%Ce among the present invention
2O
3Process with the water of surplus, be shaped as sphere, diameter is 8～10mm, and wherein said ferriferous oxide is iron oxide or tri-iron tetroxide.
The preparation method of preposition multicomponent catalyst is undertaken by following step among the present invention: take by weighing 50%～55% powdered whiting, 10%～15% waterglass, 5% aluminium oxide, 20%～25% ferriferous oxide, 0.1%～0.15%Ce by weight percentage
2O
3With mix behind the water of surplus, wherein said ferriferous oxide is iron oxide or tri-iron tetroxide, puts into ball mill and carries out ball milling, processes the ball that diameter is 8～10mm again, sintering 30min under 280～320 ℃, air atmosphere condition is cooled to room temperature then; Promptly obtain preposition multicomponent catalyst.
Preposition multicomponent catalyst of the present invention is loaded in the preposition catalyst converter, is used for cleaning of off-gas, is applicable to that with gasoline, diesel oil, combustion gas be the engine of fuel.The present invention is steamed at sintering process water, forms pitting at catalyst surface, and catalyst surface is coarse, has increased specific area.It is with in its preposition catalyst converter of packing into that the preposition multicomponent catalyst of the present invention uses; Be connected on the engine through threeway; For example be connected on the pipe that the waste gas after burner system is united with the invention machine is connected; Utilize its negative pressure that catalyst is transported in the engine by air, the amount that at every turn is admitted to engine is very little, therefore long-term the use; Since its in concentration less than 5ppm, therefore detect less than.The element of the preposition multicomponent catalyst of the present invention produces the active catalytic thing after being heated through engine; With the air is carrier; Along with pull of vacuum (negative pressure) sucks in the cylinder, promote that fuel-air evenly mixes fuel completing combustion; Strengthen fuel gases calorific value, reduce exhaust pollution thereby significantly reduce discharge of harmful gases; At aspects such as cleaning carbon distribution, enhancing power, the saving energy remarkable result is arranged all.Preposition multicomponent catalyst of the present invention has the advantage of life-span long (3～5 years), energy-conservation, reduction of discharging, non-secondary pollution, increase power.The technology of the inventive method is simple, be convenient to operation, and reaction condition is gentle.Compact cars such as car adopt catalyst of the present invention, and its discharging is basic to be realized low emission or discharge LPG gas consumption amount decline about 10% near 0.The CH of LGP bus and CO discharging also reduce significantly, and the CH discharge capacity can reduce by 88% at most.Be mainly used at treating tail gas with car.
The specific embodiment
Technical scheme of the present invention is not limited to the following cited specific embodiment, also comprises the combination in any between each specific embodiment.
The specific embodiment one: preposition multicomponent catalyst is by weight percentage by 50%～55% powdered whiting, 10%～15% waterglass, 5% aluminium oxide, 20%～25% ferriferous oxide, 0.1%～0.15%Ce in this embodiment
2O
3Process with the water of surplus, be shaped as sphere, diameter is 8～10mm, and wherein said ferriferous oxide is iron oxide or tri-iron tetroxide.
The described preposition multicomponent catalyst rough surface of this embodiment, specific surface is big, is applicable to that with gasoline, diesel oil, combustion gas be the engine of fuel.The preposition multicomponent catalyst of this embodiment has the advantage of long, energy-conservation, reduction of discharging of life-span, non-secondary pollution, increase power.Compact cars such as car adopt the described catalyst of present embodiment, and its discharging realizes low emission basically or near 0 discharging, LPG gas consumption amount descends about 10%.The CH of LGP bus and CO discharging also reduce significantly, and the CH discharge capacity can reduce by 88% at most.
The specific embodiment two: what this embodiment and the specific embodiment one were different is: preposition multicomponent catalyst is by weight percentage by 52%～54% powdered whiting, 12%～14% waterglass, 5% aluminium oxide, 22%～24% ferriferous oxide, 0.12%～0.14%Ce
2O
3Process with the water of surplus.Other is identical with the specific embodiment one.
The specific embodiment three: what this embodiment and the specific embodiment one were different is: preposition multicomponent catalyst is by weight percentage by 53% powdered whiting, 13% waterglass, 5% aluminium oxide, 23% ferriferous oxide, 0.13%Ce
2O
3Process with 5.87% water.Other is identical with the specific embodiment one.
The specific embodiment four: the preparation method of preposition multicomponent catalyst is undertaken by following step in this embodiment: take by weighing 50%～55% powdered whiting, 10%～15% waterglass, 5% aluminium oxide, 20%～25% ferriferous oxide, 0.1%～0.15%Ce by weight percentage
2O
3With mix behind the water of surplus, wherein said ferriferous oxide is iron oxide or tri-iron tetroxide, puts into ball mill then and carries out ball milling, processes the ball that diameter is 8～10mm again, sintering 30min under 280～320 ℃, air atmosphere condition is cooled to room temperature then; Promptly obtain preposition multicomponent catalyst.
The technology of the said method of this embodiment is simple, be convenient to operation, and reaction condition is gentle.The preposition multicomponent catalyst of this embodiment method preparation has the advantage of long, energy-conservation, reduction of discharging of life-span, non-secondary pollution, increase power.Compact cars such as car adopt the catalyst of present embodiment preparation, and its discharging realizes low emission basically or near 0 discharging, LPG gas consumption amount descends about 10%.The CH of LGP bus and CO discharging also reduce significantly, and the CH discharge capacity can reduce by 88% at most.
The specific embodiment five: what this embodiment and the specific embodiment four were different is: take by weighing 52%～54% powdered whiting, 12%～14% waterglass, 5% aluminium oxide, 22%～24% ferriferous oxide, 0.12%～0.14%Ce by weight percentage
2O
3With mix behind the water of surplus.Other step is identical with the specific embodiment four with parameter.
The specific embodiment six: what this embodiment was different with the specific embodiment four or five is: said sintering temperature is 300 ℃.Other is identical with the specific embodiment four or five with step and parameter.
The specific embodiment seven: this embodiment is different with one of specific embodiment four to six: said sintering time is 30min.Other is identical with one of parameter and specific embodiment four to six with step.
The specific embodiment eight: what this embodiment was different with one of specific embodiment four to seven is: the ball milling time (please replenish).
The specific embodiment nine: the preparation method of preposition multicomponent catalyst is undertaken by following step in this embodiment: take by weighing 50% powdered whiting, 10 waterglass, 5% aluminium oxide, 20% iron oxide, 0.1%Ce by weight percentage
2O
3With mix behind the water of surplus, put into ball mill and carry out ball milling 1h, process the ball that diameter is 10mm again, sintering 30min under 300 ℃, air atmosphere condition is cooled to room temperature then; Promptly obtain preposition multicomponent catalyst.
The specific embodiment ten: the preparation method of preposition multicomponent catalyst is undertaken by following step in this embodiment: take by weighing 55% powdered whiting, 15% waterglass, 5% aluminium oxide, 25% tri-iron tetroxide, 0.15%Ce by weight percentage
2O
3With mix behind the water of surplus, put into ball mill then and carry out ball milling 1h, process the ball that diameter is 9mm again, sintering 30min under 310 ℃, air atmosphere condition is cooled to room temperature then; Promptly obtain preposition multicomponent catalyst.
The specific embodiment 11: the preparation method of preposition multicomponent catalyst is undertaken by following step in this embodiment: take by weighing 52% powdered whiting, 13% waterglass, 5% aluminium oxide, 22% iron oxide, 0.14%Ce by weight percentage
2O
3With mix behind the water of surplus, put into ball mill then and carry out ball milling 1h, process the ball that diameter is 10mm again, sintering 30min under 300 ℃, air atmosphere condition is cooled to room temperature then; Promptly obtain preposition multicomponent catalyst.
Verify that effect of the present invention carries out following test.
In the following table, be meant before the repacking any purifier is not installed.Be meant after the repacking catalyst is packed in the preposition catalyst converter that method of modifying is that preposition multicomponent catalyst is packed in the preposition catalyst converter, be connected to through threeway and for example be connected to waste gas on the engine and burn again.
Test one: adopting the general five water chestnut minibuses in Liuzhou, is raw material with gasoline, and the result sees table 1.
Table 1
| Before the repacking | After the repacking | CH reduces degree | |
| Low idle discharging CH | 187 | 10ppm | Fall 94.65% |
| Surmount Europe IV:46 | |||
| Road conditions discharging CH | |||
| 20 kilometers/time | 215ppm | ?7ppm | Fall 96.7% |
| 40 kilometers/time | 122ppm | ?5ppm | Fall 95.9% |
| 50 kilometers/time | 107ppm | ?4ppm | Fall 96.3% |
Can know that by table 1 exhaust emissions has been realized low emission.
Test two: adopting Buick 1.6, is raw material with gasoline, and the result sees table 2.
Table 2
| Before the repacking | After the repacking | CH reduces degree | |
| Low idle discharging CH | 36ppm | ?3.6ppm | Fall 90% |
| Surmount Europe IV:46 |
Can know that by table 1 exhaust emissions has been realized low emission.
Test three: adopting wide fine horse taxi, is fuel with LPG, the results are shown in Table 3.
Table 3
| Before the repacking | After the repacking | CH reduces degree | |
| Low idle discharging CH | 41ppm | 12.5ppm | Fall 70% |
| Europe IV:46 | |||
| The gas consumption amount | Fall 10% approximately |
Can know that by table 3 exhaust emissions has been realized low emission.
Test four: taxi adopts the white clouds taxi, is fuel with LPG, and the result sees table 3.
Table 4
Can know that by table 4 exhaust emissions is near zero-emission.
Test five: bus fuel: LPG
Table 5
Service time is short, and exhaust emissions obviously reduces.
Claims (8)
1. preposition multicomponent catalyst is characterized in that preposition multicomponent catalyst is by weight percentage by 50%～55% powdered whiting, 10%～15% waterglass, 5% aluminium oxide, 20%～25% ferriferous oxide, 0.1%～0.15%Ce
2O
3Process with the water of surplus, be shaped as sphere, diameter is 8～10mm, and wherein said ferriferous oxide is iron oxide or tri-iron tetroxide.
2. preposition multicomponent catalyst according to claim 1 is characterized in that preposition multicomponent catalyst is by weight percentage by 52%～54% powdered whiting, 12～14% waterglass, 5% aluminium oxide, 22%～24% ferriferous oxide, 0.12%～0.14%Ce
2O
3Process with the water of surplus.
3. preposition multicomponent catalyst according to claim 1 is characterized in that preposition multicomponent catalyst is by weight percentage by 53% powdered whiting, 13% waterglass, 5% aluminium oxide, 23% ferriferous oxide, 0.13%Ce
2O
3Process with 5.87% water.
4. the preparation method of preposition multicomponent catalyst according to claim 1 is characterized in that the preparation method of preposition multicomponent catalyst is undertaken by following step: take by weighing 50%～55% powdered whiting, 10%～15% waterglass, 5% aluminium oxide, 20%～25% ferriferous oxide, 0.1%～0.15%Ce by weight percentage
2O
3With mix behind the water of surplus, put into ball mill then and carry out ball milling, process the ball that diameter is 8～10mm again, sintering under 280～320 ℃, air atmosphere condition is cooled to room temperature then; Promptly obtain preposition multicomponent catalyst; Wherein said ferriferous oxide is iron oxide or tri-iron tetroxide.
5. the preparation method of preposition multicomponent catalyst according to claim 4 is characterized in that taking by weighing by weight percentage 52%～54% powdered whiting, 12%～14% waterglass, 5% aluminium oxide, 22%～24% ferriferous oxide, 0.12%～0.14%Ce
2O
3With mix behind the water of surplus.
6. according to the preparation method of claim 4 or 5 described preposition multicomponent catalysts, it is characterized in that said sintering temperature is 300 ℃.
7. the preparation method of preposition multicomponent catalyst according to claim 6 is characterized in that said sintering time is 30min.
8. the preparation method of preposition multicomponent catalyst according to claim 7 is characterized in that the ball milling time is 1h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100534486A CN102133536B (en) | 2011-03-07 | 2011-03-07 | Front multi-element catalyst and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100534486A CN102133536B (en) | 2011-03-07 | 2011-03-07 | Front multi-element catalyst and preparation method thereof |
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| CN102133536B true CN102133536B (en) | 2012-11-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105521807A (en) * | 2014-09-26 | 2016-04-27 | 杨晓波 | Fore-laying combustion-supporting catalyst for ignition type gas engines, and preparation method thereof |
| CN109482195A (en) * | 2018-10-30 | 2019-03-19 | 范建喜 | Forward type spary coating type multicomponent catalyst and preparation method thereof for engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197686A (en) * | 1996-11-11 | 1998-11-04 | 底古萨股份公司 | Exhaus gas purification catalyst with improved hydrocarbon conversion |
| CN1799689A (en) * | 2006-01-13 | 2006-07-12 | 四川大学 | Close coupled catalyst |
| CN100998941A (en) * | 2007-01-04 | 2007-07-18 | 华东理工大学 | Precatalyst and its preparation method |
| CN101683616A (en) * | 2008-09-28 | 2010-03-31 | 中国石油大学(北京) | Macroporous composite metal oxide catalyst for purifying soot of diesel and preparation method thereof |
-
2011
- 2011-03-07 CN CN2011100534486A patent/CN102133536B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197686A (en) * | 1996-11-11 | 1998-11-04 | 底古萨股份公司 | Exhaus gas purification catalyst with improved hydrocarbon conversion |
| CN1799689A (en) * | 2006-01-13 | 2006-07-12 | 四川大学 | Close coupled catalyst |
| CN100998941A (en) * | 2007-01-04 | 2007-07-18 | 华东理工大学 | Precatalyst and its preparation method |
| CN101683616A (en) * | 2008-09-28 | 2010-03-31 | 中国石油大学(北京) | Macroporous composite metal oxide catalyst for purifying soot of diesel and preparation method thereof |
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